Create a superhero inspired by Poseidon, the Greek god of the sea. Visualize him as a modern marine conservationist, commanding and protecting oceanic realms. His attire should be a mix of diving gear and regal tridents, adorned with symbols of waves and marine life. Eyes should gleam with the depth and power of the oceans. Accessories might include a trident that purifies water or goggles that see into the ocean's heart. Embrace a palette of deep-sea blues, coral oranges, and stormy grays. Capture the essence of a guardian ensuring the balance of marine ecosystems.